Mass-production method of real spin golf ball

ABSTRACT

Disclosed is a mass-production method of a real spin golf ball. The mass-production method includes (a) preparing a plurality of golf balls securely mounted in a frame and installed at a level state in a water tub, (b) filling salt water having specific gravity higher than specific gravity of water in the water tub until the golf balls are separated from the frame to float, (c) discharging the salt water filled in the water tub in a state that the floating golf balls are stopped such that the golf balls are not shaken, and securely mounting the golf balls in the frame, and (d) marking putting lines passing through upper centers of the golf balls, thereby ensuring real straightness in putting, so that the putting is exactly performed.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a mass-production method of a real spingolf ball, capable of ensuring real straightness of the golf ball whenthe golf ball is putted.

2. Description of the Related Art

It has been reported according to the experiment by Dave Pelz who is anAmerican famous pro-golfer that, when a golf ball having an offsetcenter of gravity is putted by a distance of 3 m, an error of 6.5 cmoccurs. However, since all golf balls, which are currently manufactured,have offset centers of gravity, errors may occur as shown in theexperiment, so that even a golfer who excellently determines a puttingline and represents a superior performance may not easily put the golfball in a hole.

In order to solve the above problem, there is suggested JapaneseUnexamined Patent Publication No. 2009-80080 titled “Apparatus ForMeasuring Eccentric Amount Of Spherical Member” (filed on Apr. 16, 2009)and disclosing a technology of measuring an eccentric amount of a golfball using a solution, such as saline solution, having a specificgravity greater than that of the golf ball. However, the conventionaltechnology is to only measure the eccentric amount of the golf ballwithout displaying the center (putting line) of the golf ball.

In addition, Korean Utility Model Registration No. 199671 titled“Apparatus for marking a rotation center of a golf ball” (issued on Aug.3, 2000) discloses an apparatus for making a rotation center of a golfball, which includes a body having an inner space; a rotating plateinstalled in the inner space of the body and having a top surface onwhich the golf ball is placed for the rotation of the golf ball; and aunit for applying rotational force to the rotating plate. The unit forapplying the rotational force includes a switch mounted on an outercircumference of a body thereof; a battery for applying power accordingto an on/off state of the switch; and a motor installed in the body toreceive the power from the battery for the rotation thereof and having ashaft used to apply the rotational shaft to the rotating plate.

However, the apparatus for marking the rotation center of the golf ballaccording to the related art has a fundamental problem that thestructure is significantly complex, particularly, the rotation center ofthe golf ball is individually marked, so that the mass-production ofgolf balls are difficult.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made keeping in mind theabove problems occurring in the prior art, and an object of the presentinvention is to a mass production method of a real spin golf ball,capable of ensuring real straightness of the golf ball when putting thegolf ball to realize putting accuracy.

In order to accomplish the above object, there is provided amass-production method of a real spin golf ball. The mass-productionmethod including (a) preparing a plurality of golf balls securelymounted in a frame and installed at a level state in a water tub, (b)filling salt water having specific gravity higher than specific gravityof water in the water tub until the golf balls are separated from theframe to float, (c) discharging the salt water filled in the water tubin a state that the floating golf balls are stopped such that the golfballs are not shaken, and securely mounting the golf balls in the frame;and (d) marking putting lines passing through upper centers of the golfballs.

In detail, according to the present invention, (c) the discharging ofthe salt water filled in the water tub in the state that the floatinggolf balls are stopped such that the golf balls are not shaken, andsecurely mounting the golf balls in the frame includes (e) marking theupper centers of the golf balls, and (f) drying the golf balls bycleaning the golf balls.

In detail, according to the present invention, the frame is formedtherein with a plurality of through holes in which the golf balls aresecurely mounted while being spaced apart from each other at apredetermined interval.

In more detail, the specific gravity of the salt water is in a range of1.3 to 1.5.

As described above, according to the mass-production method of the golfball of the present invention, the real straightness of the golf ballcan be ensured when putting the golf ball, so that the golf balls can beproduced in mass production.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 to 3 are sectional views showing a mass production process of areal spin golf ball according to one embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, embodiments of the present invention will be described indetail with reference to accompanying drawings.

Hereinafter, the embodiment of the present invention will be describedwith reference to FIGS. 1 to 3.

A water tub 1 applied to the present invention has a structure having anopen top surface.

A base frame 2 is installed on a bottom surface of the water tub 1 tomaintain a level state. In this case, when the bottom surface of thewater tub 1 is maintained at a preferable level state, the base frame 2may not be installed.

A frame 3, on which a plurality of golf balls 4 are secularly mounted,is provided on the top surface of the base frame 2. Although one frame 3is shown in drawings of the present invention, the present invention isnot limited thereto, but several tens of golf balls to several hundredsof golf balls may be provided for a production purpose.

In this case, the frame 3 is formed therein a plurality of through holes3 a to confine or release the confinement of an outer circumference ofthe golf ball 4. An upper opening of the through hole 3 a may be roundedas shown in an enlarged view of FIG. 3.

If the frame 3, on which the golf balls 4 are securely mounted, isprovided on the top surface of the base frame 3, salt water havingspecific gravity higher than that of water is supplied to the frame 3from a position adjacent to the bottom surface of the water tub 1. Inthis case, the salt water is filled in the water tub 2 to a position inwhich the golf balls float separately from the through holes 3 a of theframe 3 without the completion separation from the through hole 3 a (seeenlarged view of FIG. 3). In more particular, the salt water applied tothe present invention has the specific gravity in the range of about 1.3to about 1.5, but the present invention is not limited thereto.

Then, the golf balls 4 fluctuating as the salt water is filled in thewater tub 2 are stopped if a predetermined time is elapsed. In thiscase, heavier portions of the stopped golf balls 4 are directeddownward.

The salt water filled in the water tub 1 is slowly discharged so thatthe stopped golf balls 4 are not moved. In this case, the golf balls 4are securely mounted in the through holes 3 a of the frame 3.

Thereafter, putting lines are marked while passing through upper centersof the golf balls 4. In this case, a process of marking the puttinglines may be sub-divided into following processes.

First, the upper centers of the golf balls 4 securely mounted in thethrough holes 3 a of the frame 3 are marked, and the surfaces of thegolf balls 4 are cleaned and dried.

Next, after the frame 3 is separated from the base frame 2, the puttinglines passing through the marks on the upper centers of the golf balls 4are printed.

In this case, reference numeral Rsw, which is not described yet, is asalt water tank, and reference numerals P1 and P2 represent feeding anddischarging pumps, respectively.

Therefore, the present invention can provide the golf balls capable ofensuring perfect straightness, thereby actively assisting the putting ofgolfer.

Although a preferred embodiment of the present invention has beendescribed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions arepossible, without departing from the scope and spirit of the inventionas disclosed in the accompanying claims.

What is claimed is:
 1. A mass-production method of a real spin golfball, the mass-production method comprising: (a) preparing a pluralityof golf balls securely mounted in a frame and installed at a level statein a water tub; (b) filling salt water having specific gravity higherthan specific gravity of water in the water tub until the golf balls areseparated from the frame to float; (c) discharging the salt water filledin the water tub in a state that the floating golf balls are stoppedsuch that the golf balls are not shaken, and securely mounting the golfballs in the frame; and (d) marking putting lines passing through uppercenters of the golf balls.
 2. The mass-production method of claim 1,wherein (c) the discharging of the salt water filled in the water tub inthe state that the floating golf balls are stopped such that the golfballs are not shaken, and securely mounting the golf balls in the framecomprises: (e) marking the upper centers of the golf balls; and (f)drying the golf balls by cleaning the golf balls.
 3. The mass-productionmethod of claim 1, wherein the frame is formed therein with a pluralityof through holes in which the golf balls are securely mounted whilebeing spaced apart from each other by a predetermined interval.
 4. Themass-production method of claim 1, wherein the specific gravity of thesalt water is in a range of 1.3 to 1.5.